Manimaran (Sarath Kumar), his father Poochi (S. V. Ramadas), and his grandfather Nagappan (M. N. Nambiar) are short-tempered persons who beat the villagers for a simple quarrel. Only Manimaran's mother, Sivagami (Lakshmi), can control them. Uma (Rajeswari), Manimaran's sister, marries a man from another village. Manimaran falls in love with Vaidehi (Devayani), a Brahmin girl. Manimaran takes his father and grandfather to Vaidehi's house to ask her to marry him. Vaidehi's father (Delhi Ganesh) refuses that marriage proposal because of caste differences. Manimaran wants Vaidehi to be his wife somehow, for which his father and grandfather tell him an idea. Vaidehi goes to the temple for a prayer and Manimaran comes there. When the prayer is over and she opens her eyes, Manimaran stands in front of her and takes a thaali and ties it around Vaidehi's neck. Thus, Manimaran marries Vaidehi unexpectedly and she suddenly faints in shock. Vaidehi's father went to the police station to complain but to no avail. Manimaran's mother Sivagami welcomes Vaidehi, who has come home to live as a daughter-in-law, and changes her mind. That same night Manimaran and Vaidehi start their married life together on the first night. Vaidehi was not easily acquainted with her husband's house. In a fight against Manimaran, the antagonist becomes blind in one eye and decides to take revenge on Manimaran. When Manimaran drives his pregnant sister, the antagonist stops him but Manimaran beats the antagonist and his henchmen. Uma arrives too late at the hospital and dies with her baby. Vaidehi leaves their house because of her husband's behaviour who brings Uma's death. Manimaran changes his behaviour and tries to convince Vaidehi to come back home.